AutoCodes – Chrysler – P025B Chrysler

P025B Chrysler Code - Fuel Pump Control Circuit Performance

Quick Answer

When the Powertrain Control Module (PCM) receives a 'Start' or 'Run' signal from the ignition; It energizes the Fuel Pump relay which sends a continuous 12 volt supply to the Fuel Pump Control Module (FPCM). Common causes include Faulty Fuel Pump Control Module (FPCM), Fuel Pump Control Module (FPCM) Harness is open or shorted, Fuel Pump Control Module (FPCM) circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P025B Chrysler indicates Fuel Pump Control Circuit Performance.
Common causes: Common causes include Faulty Fuel Pump Control Module (FPCM), Fuel Pump Control Module (FPCM) Harness is open or shorted, Fuel Pump Control Module (FPCM) circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 1,410

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 17, 2021

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P025B Chrysler Description

When the Powertrain Control Module (PCM) receives a 'Start' or 'Run' signal from the ignition; It energizes the Fuel Pump relay which sends a continuous 12 volt supply to the Fuel Pump Control Module (FPCM). The PCM also sends a control signal directly to the FPCM which regulates the Pulse Width Modulated (PWM) voltage that will be sent to the Fuel Pump Module. The PWM will vary from 10-100% depending on the input of the Fuel Rail Pressure sensor and other engine demands. The Powertrain Control Module (PCM) receives a Pulse Width Modulated (PWM) signal from the Fuel Pump Control Module (FPCM) representing the state of all inputs and outputs of the FPCM. This is a Constant Pressure Fuel system which means any Delta Pressure test performed on the Fuel Pump would show a continuous pressure (regardless of the changes in PWM). If a pressure sensor fails or other failures are present; The duty cycle goes to Limp mode (100%) to maintain fuel pressure.

OBDII Code P025B Chrysler - Fuel Pump Control Circuit Performance - AutoCodes.com — P025B Chrysler Code - Fuel Pump Control Circuit Performance

What does this mean?

What are the Possible Causes of the DTC P025B Chrysler?

Faulty Fuel Pump Control Module (FPCM)
Fuel Pump Control Module (FPCM) Harness is open or shorted
Fuel Pump Control Module (FPCM) circuit poor electrical connection

How to Fix the DTC P025B Chrysler?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P025B Chrysler code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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Need more information on how to fix the P025B Chrysler code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P025B Chrysler code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P025B Chrysler Code

1. What are the common symptoms of OBDII code P025B in a Chrysler related to the fuel pump control circuit?

Symptoms may include engine stalling, rough idling, poor acceleration, and failure to start.

2. What are some possible causes of the P025B code in a Chrysler vehicle?

Potential causes include a faulty fuel pump driver module, damaged wiring or connectors in the fuel pump circuit, or a problem with the fuel pump itself.

3. How can I diagnose the fuel pump control circuit performance issue causing code P025B in my Chrysler?

You can start by checking the fuel pump fuse, relay, and wiring for any signs of damage. Using a multimeter to test the voltage and continuity in the circuit can help pinpoint the issue.

4. Is it safe to continue driving my Chrysler with the P025B code triggered?

It is not recommended to drive your vehicle with a P025B code, as it can lead to more serious engine issues and potential safety hazards due to fuel delivery problems.

5. Are there any DIY repair tips for fixing the fuel pump control circuit performance issue in a Chrysler?

If you have experience with automotive electrical systems, you may attempt to inspect and repair damaged wiring or connectors in the fuel pump circuit. However, it is advisable to seek professional help for complex issues.

6. Can a faulty fuel pump driver module be repaired or does it need to be replaced in a Chrysler?

In most cases, a faulty fuel pump driver module will need to be replaced to resolve the P025B code and ensure proper fuel pump operation.

7. How much does it typically cost to repair the fuel pump control circuit performance issue causing code P025B in a Chrysler?

The cost of repairs can vary depending on the exact cause of the issue and whether you choose to go to a dealership or an independent mechanic. It is recommended to obtain quotes from different sources.

8. Will resetting the OBDII codes make the P025B code disappear in a Chrysler?

Resetting the codes may temporarily clear the P025B code, but it will likely reappear if the underlying issue with the fuel pump control circuit is not addressed.

9. Can a fuel pump control circuit performance issue be prevented in a Chrysler?

Regular maintenance, such as checking the fuel system components for wear and tear, can help prevent issues like the P025B code from occurring.

10. Is the P025B code specific to Chrysler vehicles, or can it occur in other car makes and models?

While the P025B code is commonly associated with Chrysler vehicles, similar fuel pump control circuit performance issues can be present in other car makes and models, triggering different OBDII codes.